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DR. MARCO N. DIAZ M.D.
NPI 1629000302
Internal Medicine - Cardiovascular Disease in Scarborough, ME

Active since July 06, 2006PECOS EnrolledAccepts Medicare Assignment
98.06/100
CMS Quality Rating
96 CAMPUS DRIVE, SUITE 1, SCARBOROUGH, ME 04074(207) 885-9905(207) 396-5600 Get Directions Write a Review

NPPES record last updated: January 26, 2015. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Marco N. Diaz M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARCO N. DIAZ M.D. (NPI 1629000302) is an individual cardiovascular disease provider in Scarborough, Maine, licensed in Maine (MD15173) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and is a graduate of University Of Massachusetts Medical School (1991).

NPPES Registry Identity

NPI1629000302
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. MARCO N. DIAZCredential: M.D.
Location Address96 CAMPUS DRIVE, SUITE 1Scarborough, ME 04074
Mailing Address301c Us Route OneScarborough, ME 04074 · (207) 396-8600 · Fax (207) 396-8632
Phone(207) 885-9905
Fax(207) 396-5600
Sole ProprietorNo
Medical School CMSUniversity Of Massachusetts Medical SchoolGraduated 1991
Enumeration DateJuly 6, 2006
Last NPPES UpdateJanuary 26, 2015
✔ NPI 1629000302 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in ME · MD15173
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
96 CAMPUS DRIVE, Scarborough, ME 04074
Open in Google Maps ↗

Other Identifiers 10

Medicare PINMM785503ME
Medicare UPING42368
Medicaid282820099ME
Medicare PINMM7855ME
Medicare PINP01035657ME
Medicare PIN060070392ME
Other037561ME · Anthem
Medicaid30200521NH
Medicare PINMM785502ME
Medicare PINMM785505ME

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Marco N. Diaz M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3870523392
PECOS Enrollment IDI20050815000907
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Marco Diaz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Maine Medical Partners
Same address
Cardiovascular Disease
96 CAMPUS DR, SUITE 1
Scarborough, ME 04074
  • Reassigned Medicare billing, Maine enrollment
  • 229 clinicians in this Medicare group
NPI 1386937175 (207) 885-9905
Maine Medical Partners
0.1 mi
Surgery
92 CAMPUS DRIVE, 3RD FLOOR
Scarborough, ME 04074
  • Reassigned Medicare billing, Maine enrollment
  • Medicare enrollment name: Mainehealth
  • Also billed through NPI 1922791417 (Maine)
  • 3,140 clinicians in this Medicare group
NPI 1346687167 (207) 774-6368
St. Mary's Regional Medical Center
35 mi
General Acute Care Hospital
93 CAMPUS AVE
Lewiston, ME 04240
  • Reassigned Medicare billing, Maine enrollment
  • Medicare enrollment name: St Marys Regional Medical Center
  • 381 clinicians in this Medicare group
NPI 1447226584 (207) 777-8100

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306
This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
40 services40 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
33 services30 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
24 services14 patients
3d radiographic procedure 76376
A 3D radiographic procedure is a non-invasive imaging test that helps doctors visualize the internal structures of your body in three dimensions. This advanced technology provides detailed images, aiding in accurate diagnosis and treatment planning. It involves exposure to minimal radiation.
21 services21 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
17 services12 patients
Heart muscle strain imaging 93356
Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.
16 services16 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Maine Medical Center

Acute Care Hospitals · Portland, ME
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number200009
Location22 Bramhall StPortland, ME 04102 · Cumberland County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04074 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$128.83 typical visit price
range $56.28 – $169.96
Typical copayment $32.20 (range $14.07 – $42.49)
Most-billed visit code 99204
Established Patient
$70.13 typical visit price
range $18.22 – $138.92
Typical copayment $17.53 (range $4.55 – $34.73)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.06/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality86.13
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 19

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HEIDI M ROY FNP
Nurse Practitioner (Family)
96 CAMPUS DRIVE, SUITE 1
SCARBOROUGH, ME 04074
Cumberland County (207) 885-9905
DR. MARY C. FAHRENBACH M.D.
Internal Medicine (Cardiovascular Disease)
96 CAMPUS DRIVE, SUITE 1
SCARBOROUGH, ME 04074
Cumberland County (207) 885-9905
DR. MYLAN C. COHEN M.D.
Internal Medicine (Cardiovascular Disease)
96 CAMPUS DRIVE, SUITE 1
SCARBOROUGH, ME 04074
Cumberland County (207) 885-9905
DR. ESTHER S. SHAO M.D.
Internal Medicine (Cardiovascular Disease)
96 CAMPUS DRIVE, SUITE 1
SCARBOROUGH, ME 04074
Cumberland County (207) 885-9905
DR. KARL C. SZE M.D.
Internal Medicine (Cardiovascular Disease)
96 CAMPUS DRIVE, SUITE 1
SCARBOROUGH, ME 04074
Cumberland County (207) 885-9905
MS. JEAN S. CASS FNP
Nurse Practitioner (Family)
96 CAMPUS DRIVE, SUITE 1
SCARBOROUGH, ME 04074
Cumberland County (207) 885-9905
DR. DAVID C. BURKEY M.D.
Internal Medicine (Cardiovascular Disease)
96 CAMPUS DRIVE, SUITE 1
SCARBOROUGH, ME 04074
Cumberland County (207) 885-9905
DR. PAUL F. FREY M.D.
Internal Medicine (Interventional Cardiology)
96 CAMPUS DRIVE, SUITE 1
SCARBOROUGH, ME 04074
Cumberland County (207) 885-9905

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marco Diaz's NPI number?

The NPI number for Marco Diaz is 1629000302. It was assigned to this individual provider in the NPPES registry on July 6, 2006.

Where is Marco Diaz located?

Marco Diaz practices at 96 Campus Drive Suite 1, Scarborough, ME 04074. The listed phone number is (207) 885-9905.

What is Marco Diaz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Marco Diaz enrolled in Medicare?

Yes. Marco Diaz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Marco Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marco Diaz reassigns Medicare benefits to 3 organizations: Maine Medical Partners (Scarborough, ME), Maine Medical Partners (Scarborough, ME) and St. Mary's Regional Medical Center (Lewiston, ME). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marco Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marco Diaz accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Marco Diaz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Marco Diaz affiliated with any hospitals?

According to CMS data, Marco Diaz is affiliated with Maine Medical Center.

When was this NPI record last updated?

The NPPES record for Marco Diaz was last updated on January 26, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.